CN215757456U

CN215757456U - Steelmaking converter flue gas waste heat recovery device

Info

Publication number: CN215757456U
Application number: CN202122490460.5U
Authority: CN
Inventors: 张强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-16
Filing date: 2021-10-16
Publication date: 2022-02-08
Anticipated expiration: 2031-10-16

Abstract

The utility model discloses a steelmaking converter flue gas waste heat recovery device which comprises a box body, wherein the box body is of a hollow structure, the upper end of the box body is communicated with a smoke exhaust pipe, the bottom surface of the box body is communicated with a chimney, a heat exchange box is installed in the box body through an upright post, a coil pipe is installed in the heat exchange box, two ends of the coil pipe are respectively communicated with a water inlet pipe and a water drain pipe, the water inlet pipe and the water drain pipe penetrate through the heat exchange box and the box body, and the bottom surface of the heat exchange box is provided with a filter screen. Has the advantages that: utilize the heat exchange case to absorb the heat in the flue gas, form heat exchange with the water in the coil, realize heat recycle in the flue gas, environmental protection more, utilize the filter screen to filter the impurity in the flue gas moreover, avoid impurity to discharge in the air, environmental protection more.

Description

Steelmaking converter flue gas waste heat recovery device

Technical Field

The utility model relates to the technical field of steelmaking, in particular to a steelmaking converter flue gas waste heat recovery device.

Background

One of the most important steps in converter steelmaking is oxygen decarburization, in which a converter generates a large amount of flue gas, the main components of which are CO, CO2 and N2, and small amounts of O2 and Ar. Since converter flue gas contains a large amount of CO, converter flue gas is also called converter gas, and the initial temperature of converter gas is about 1600 ℃.

The existing method for directly discharging the flue gas of the converter into the air can not effectively utilize the heat in the flue gas, thereby causing energy waste.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a device for recovering the flue gas waste heat of a steelmaking converter, and the preferable technical scheme in the technical schemes provided by the utility model is described in detail below.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a steelmaking converter flue gas waste heat recovery device which comprises a box body, wherein the box body is of a hollow structure, the upper end of the box body is communicated with a smoke exhaust pipe, the bottom surface in the box body is communicated with a chimney, and a heat exchange box is arranged in the box body through an upright post;

the heat exchange box is internally provided with a coil pipe, the two ends of the coil pipe are respectively communicated with a water inlet pipe and a water drain pipe, the water inlet pipe and the water drain pipe penetrate out of the heat exchange box and the box body, the bottom surface of the heat exchange box is provided with a filter screen, the bottom end of the filter screen is connected with the box body, and the filter screen corresponds to the chimney.

By adopting the steelmaking converter flue gas waste heat recovery device, when the device is required to be used for flue gas waste heat recovery, liquid with good heat conductivity is added into the heat exchange box, flue gas enters the chimney and then the heat in the flue gas is absorbed by the heat exchange box, heat conduction liquid and water in the coil pipe form heat exchange, so that the heat in the flue gas is recycled, the device is more environment-friendly, and the filter screen can filter impurities in the flue gas, so that the impurities are prevented from being discharged into the air, and the device is more environment-friendly.

As a further optimized scheme, a support is installed at the top end of the smoke exhaust pipe, and a top cap is installed at the top end of the support.

As a further optimized scheme, the outer surface of the top cap is conical.

As a further optimized scheme, the heat exchange box is made of a heat conducting material.

As a further optimized solution, the filter screen is connected with the heat exchange box by screws.

As a further optimized scheme, the filter screen is connected with the box body through screws.

As a further optimized scheme, the inner bottom surface of the box body is in an inverted cone shape.

Has the advantages that:

1. the heat exchange box is used for absorbing the heat in the flue gas and forming heat exchange with the water in the coil pipe, so that the heat in the flue gas is recycled, and the environment is protected;

2. utilize the filter screen can filter the impurity in the flue gas, avoid impurity to discharge in the air, environmental protection more.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a cross-sectional top view of a heat exchange cabinet according to the present invention;

fig. 3 is a schematic structural view of the filter screen of the present invention.

The reference numerals are explained below:

1. a box body; 2. a heat exchange box; 3. a smoke exhaust pipe; 301. a pillar; 302. a top cap; 4. a drain pipe; 5. a filter screen; 6. a chimney; 7. a column; 8. a water inlet pipe; 9. and (4) coiling the pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The utility model will be further explained with reference to the drawings.

The first embodiment:

referring to fig. 1-3, the utility model provides a flue gas waste heat recovery device of a steelmaking converter, which comprises a box body 1, wherein the box body 1 is internally of a hollow structure, the upper end of the box body 1 is communicated with a smoke exhaust pipe 3, the inner bottom surface of the box body 1 is communicated with a chimney 6, and a heat exchange box 2 is arranged in the box body 1 through a stand column 7;

install coil pipe 9 in heat exchange box 2, the coil pipe 9 both ends communicate respectively has inlet tube 8 and drain pipe 4, and inlet tube 8 and drain pipe 4 wear out heat exchange box 2 and box 1, and filter screen 5 is installed to heat exchange box 2 bottom surface, and filter screen 5 bottom is connected with box 1, and filter screen 5 is corresponding with chimney 6.

Second embodiment: the top end of the smoke exhaust pipe 3 is provided with a support column 301, and the top end of the support column 301 is provided with a top cap 302.

The top cap 302 can prevent external impurities from entering the smoke exhaust pipe 3, and the normal use of the smoke exhaust pipe 3 is ensured.

The third embodiment: the inner bottom surface of the box body 1 is in an inverted cone shape.

Make in the impurity in the flue gas can flow back goes into chimney 6, prevents that impurity from deposiing at box 1, the convenient clearance to impurity.

The working principle of the utility model is as follows: when this device is required to be used for recovering the waste heat of the flue gas, liquid with good heat conductivity is added into the heat exchange box 2, the flue gas enters the box body 1 from the chimney 6, the heat in the flue gas is absorbed by the heat exchange box 2, the heat exchange is formed by the heat conduction liquid and the water in the coil pipe 9, the heat is recycled in the flue gas, the environment is more protected, the impurities in the flue gas can be filtered by the filter screen 5, and the impurities are prevented from being discharged into the air, so that the environment is more protected.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a steelmaking converter flue gas waste heat recovery device which characterized in that: the device comprises a box body (1), wherein the box body (1) is of a hollow structure, the upper end of the box body (1) is communicated with a smoke exhaust pipe (3), the inner bottom surface of the box body (1) is communicated with a chimney (6), and a heat exchange box (2) is arranged in the box body (1) through a stand column (7);

install coil pipe (9) in heat exchange box (2), coil pipe (9) both ends communicate respectively has inlet tube (8) and drain pipe (4), inlet tube (8) with drain pipe (4) are worn out heat exchange box (2) with box (1), filter screen (5) are installed to heat exchange box (2) bottom surface, filter screen (5) bottom with box (1) are connected, filter screen (5) with chimney (6) are corresponding.

2. The steelmaking converter flue gas waste heat recovery device of claim 1, characterized in that: prop (301) are installed on tub (3) top of discharging fume, prop (301) top installation hood (302).

3. The steelmaking converter flue gas waste heat recovery device of claim 2, characterized in that: the outer surface of the top cap (302) is conical.

4. The steelmaking converter flue gas waste heat recovery device of claim 1, characterized in that: the heat exchange box (2) is made of heat conducting materials.

5. The steelmaking converter flue gas waste heat recovery device of claim 1, characterized in that: the filter screen (5) is in screw connection with the heat exchange box (2).

6. The steelmaking converter flue gas waste heat recovery device of claim 5, characterized in that: the filter screen (5) is in screw connection with the box body (1).

7. The steelmaking converter flue gas waste heat recovery device of claim 1, characterized in that: the inner bottom surface of the box body (1) is in an inverted cone shape.